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equipment 
Collective term for the materials, instruments and tools used for engraving and printing.
caliper
Instrument that measures the stone’s thickness in order to level it.
pumice correcting pencil
Instrument used to polish the stone and make corrections to the figure.
drypoint
Instrument used to engrave the stone in some lithographic techniques.
litho pencil
Grease pencil used to draw a figure on a lithographic stone.
